> ## Documentation Index
> Fetch the complete documentation index at: https://docs.cartesia.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Changelog

> Release history for Cartesia self-hosted deployments

## sonic-20260503

<AccordionGroup>
  <Accordion title="Sonic 3.5">
    Adds support for Sonic 3.5.

    `sonic-20260503` is the minimum release tag required to deploy Sonic 3.5. Use `model_id: "azure-disco"` in your TTS worker and requests to route to Sonic 3.5.
  </Accordion>
</AccordionGroup>

## sonic-20260310

<AccordionGroup>
  <Accordion title="Add voices API">
    New `POST /onprem/add-voices` endpoint to migrate voices from the Cartesia cloud to your self-hosted deployment. Supports up to 50 voices per request.

    See [Managing Artifacts](/self-hosted/managing-artifacts) for details.
  </Accordion>

  <Accordion title="Add pronunciation dictionaries API">
    New `POST /onprem/add-pdict` endpoint to migrate pronunciation dictionaries from the Cartesia cloud to your self-hosted deployment. Supports up to 50 dictionaries per request.

    See [Managing Artifacts](/self-hosted/managing-artifacts) for details.
  </Accordion>

  <Accordion title="Hot reload">
    New artifacts (voices, migration files) are picked up automatically without requiring a rollout. Enabled by default.

    ```hcl theme={null}
    enable_hot_reload = false  # to disable
    ```

    <Warning>
      Hot reload does not support PVC voices. Migrations with `include_loras: true` require a restart of the worker pods.
    </Warning>
  </Accordion>
</AccordionGroup>